Compare commits
8 Commits
32c2d32e6a
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more_effic
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1483af3177
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565f7eebbd
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9239a34256
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b02543c848
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3eb6cc58ef
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0615ab5073
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776cf354f8
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3b186a3d75
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@@ -16,3 +16,10 @@ make all
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```
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the gameboy rom will be output to `obj/untitled2dshooter.gb`
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## credits
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### art
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a cool guy named louie - drew mike
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210
res/sprite_metadata.c
Normal file
210
res/sprite_metadata.c
Normal file
@@ -0,0 +1,210 @@
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#include <gb/gb.h>
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#include "../src/sprite.h"
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#include "../src/flags.h"
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Sprite sprites_info[] = {
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{
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.frames_since_last_dash = 0,
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.frames_since_last_jump = 0,
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.name = "arrow",
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.has_diag_sprites = 0,
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.bitmap_index = SI_LEFT,
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.has_joypad = 0,
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.pos = { .x = 0, .y = 0},
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.vel = { .x = 0, .y = 0},
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.acc = { .x = 0, .y = 0},
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.bitmap_indexes[SI_UP] = 12, .bitmap_prop[SI_UP] = 0,
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.collision_offset[SI_UP] = {
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.itl = { .x = 3, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 3, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_DOWN] = 12, .bitmap_prop[SI_DOWN] = S_FLIPY,
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.collision_offset[SI_DOWN] = {
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.itl = { .x = 3, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 3, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_LEFT] = 11, .bitmap_prop[SI_LEFT] = 0,
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.collision_offset[SI_LEFT] = {
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.itl = { .x = 8, .y = 3},
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.itr = { .x = 1, .y = 3},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_RIGHT] = 11, .bitmap_prop[SI_RIGHT] = S_FLIPX,
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.collision_offset[SI_RIGHT] = {
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.itl = { .x = 8, .y = 3},
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.itr = { .x = 1, .y = 3},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_UP_RIGHT] = 13, .bitmap_prop[SI_UP_RIGHT] = 0,
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.collision_offset[SI_UP_RIGHT] = {
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.itl = { .x = 7, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 7, .y = 2},
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.ibr = { .x = 1, .y = 2},
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},
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.bitmap_indexes[SI_UP_LEFT] = 13, .bitmap_prop[SI_UP_LEFT] = S_FLIPX,
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.collision_offset[SI_UP_LEFT] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 2, .y = 8},
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.ibl = { .x = 8, .y = 2},
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.ibr = { .x = 2, .y = 2},
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},
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.bitmap_indexes[SI_DOWN_LEFT] = 13, .bitmap_prop[SI_DOWN_LEFT] = S_FLIPX | S_FLIPY,
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.collision_offset[SI_DOWN_LEFT] = {
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.itl = { .x = 8, .y = 7},
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.itr = { .x = 2, .y = 7},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 2, .y = 1},
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},
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.bitmap_indexes[SI_DOWN_RIGHT] = 13, .bitmap_prop[SI_DOWN_RIGHT] = S_FLIPY,
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.collision_offset[SI_DOWN_RIGHT] = {
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.itl = { .x = 7, .y = 7},
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.itr = { .x = 1, .y = 7},
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.ibl = { .x = 7, .y = 1},
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.ibr = { .x = 1, .y = 1},
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}
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},
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{
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.frames_since_last_dash = 0,
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.frames_since_last_jump = 0,
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.name = "dodgy_hat_guy",
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.has_diag_sprites = 0,
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.bitmap_index = SI_LEFT,
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.has_joypad = 0,
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.pos = { .x = 0, .y = 0},
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.vel = { .x = 0, .y = 0},
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.acc = { .x = 0, .y = 0},
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.bitmap_indexes[SI_UP] = 14, .bitmap_prop[SI_UP] = 0,
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.collision_offset[SI_UP] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_DOWN] = 15, .bitmap_prop[SI_DOWN] = 0,
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.collision_offset[SI_DOWN] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_LEFT] = 14, .bitmap_prop[SI_LEFT] = 0,
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.collision_offset[SI_LEFT] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_RIGHT] = 14, .bitmap_prop[SI_RIGHT] = S_FLIPX,
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.collision_offset[SI_RIGHT] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_UP_RIGHT] = 14, .bitmap_prop[SI_UP_RIGHT] = 0,
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.collision_offset[SI_UP_RIGHT] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_UP_LEFT] = 14, .bitmap_prop[SI_UP_LEFT] = S_FLIPX,
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.collision_offset[SI_UP_LEFT] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_DOWN_LEFT] = 15, .bitmap_prop[SI_DOWN_LEFT] = 0,
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.collision_offset[SI_DOWN_LEFT] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_DOWN_RIGHT] = 15, .bitmap_prop[SI_DOWN_RIGHT] = S_FLIPX,
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.collision_offset[SI_DOWN_RIGHT] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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}
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},
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{
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.frames_since_last_dash = 0,
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.frames_since_last_jump = 0,
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.name = "mike",
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.has_diag_sprites = 0,
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.bitmap_index = SI_LEFT,
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.has_joypad = 0,
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.pos = { .x = 0, .y = 0},
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.vel = { .x = 0, .y = 0},
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.acc = { .x = 0, .y = 0},
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.bitmap_indexes[SI_UP] = 25, .bitmap_prop[SI_UP] = 0,
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.collision_offset[SI_UP] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_DOWN] = 22, .bitmap_prop[SI_DOWN] = 0,
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.collision_offset[SI_DOWN] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_LEFT] = 21, .bitmap_prop[SI_LEFT] = 0,
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.collision_offset[SI_LEFT] = {
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.itl = { .x = 8, .y = 5},
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.itr = { .x = 1, .y = 5},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_RIGHT] = 21, .bitmap_prop[SI_RIGHT] = S_FLIPX,
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.collision_offset[SI_RIGHT] = {
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.itl = { .x = 8, .y = 5},
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.itr = { .x = 1, .y = 5},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_UP_RIGHT] = 23, .bitmap_prop[SI_UP_RIGHT] = 0,
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.collision_offset[SI_UP_RIGHT] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_UP_LEFT] = 23, .bitmap_prop[SI_UP_LEFT] = S_FLIPX,
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.collision_offset[SI_UP_LEFT] = {
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.itl = { .x = 8, .y = 8},
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.itr = { .x = 1, .y = 8},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_DOWN_LEFT] = 24, .bitmap_prop[SI_DOWN_LEFT] = S_FLIPX,
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.collision_offset[SI_DOWN_LEFT] = {
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.itl = { .x = 8, .y = 7},
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.itr = { .x = 1, .y = 7},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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},
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.bitmap_indexes[SI_DOWN_RIGHT] = 24, .bitmap_prop[SI_DOWN_RIGHT] = 0,
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.collision_offset[SI_DOWN_RIGHT] = {
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.itl = { .x = 8, .y = 7},
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.itr = { .x = 1, .y = 7},
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.ibl = { .x = 8, .y = 1},
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.ibr = { .x = 1, .y = 1},
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}
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}
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};
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3
res/sprite_metadata.h
Normal file
3
res/sprite_metadata.h
Normal file
@@ -0,0 +1,3 @@
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#include "../src/sprite.h"
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extern Sprite sprites_info[];
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@@ -10,7 +10,7 @@
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Compression : None.
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Counter : None.
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Tile size : 8 x 8
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Tiles : 0 to 10
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Tiles : 0 to 25
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Palette colors : None.
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SGB Palette : None.
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||||
@@ -25,8 +25,8 @@
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/* Start of tile array. */
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unsigned char sprites[] =
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{
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0xF7,0x08,0xED,0x12,0xFE,0x11,0xFF,0x38,
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0xFE,0x39,0xFE,0x39,0xFF,0x7E,0xFF,0x6E,
|
||||
0xFF,0x19,0xEF,0x17,0xFF,0x11,0xFF,0x3B,
|
||||
0xFE,0x3F,0xFE,0x3D,0xFF,0x7E,0xFF,0x6E,
|
||||
0xFF,0x00,0xC3,0x42,0x81,0x00,0x81,0x00,
|
||||
0x81,0x00,0x81,0x00,0xC3,0x42,0xFF,0x00,
|
||||
0xC3,0xC3,0xDB,0xDB,0x3C,0x3C,0x7E,0x7E,
|
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@@ -46,7 +46,37 @@ unsigned char sprites[] =
|
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0xC3,0xC3,0xDB,0xDB,0x3C,0x3C,0x7E,0x7E,
|
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0x7E,0x7E,0x3C,0x3C,0xDB,0xDB,0x42,0xC3,
|
||||
0x43,0xC3,0xDB,0xDB,0x3C,0x3C,0x7E,0x7E,
|
||||
0x7E,0x7E,0x3C,0x3C,0xDB,0xDB,0x43,0xC3
|
||||
0x7E,0x7E,0x3C,0x3C,0xDB,0xDB,0x43,0xC3,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0x00,0x00,0x00,0x43,0x38,0xC6,0x00,0x43,
|
||||
0x00,0x02,0x00,0x07,0x02,0x00,0x02,0x00,
|
||||
0x02,0x00,0x00,0x02,0x00,0x07,0x00,0x05,
|
||||
0x00,0x03,0x02,0x01,0x04,0x00,0x08,0x00,
|
||||
0x00,0x30,0x00,0x50,0x00,0x20,0x00,0x00,
|
||||
0x38,0x38,0x7C,0x7C,0x7C,0x44,0x38,0x00,
|
||||
0x18,0x00,0x18,0x18,0xBD,0xBD,0xBD,0xBD,
|
||||
0x38,0x38,0x7C,0x7C,0x7C,0x44,0x39,0x01,
|
||||
0x99,0x81,0x98,0x98,0x3C,0x3C,0x3C,0x3C,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7E,
|
||||
0x25,0xFE,0x18,0xE7,0x7E,0xFF,0x00,0xDB,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7C,
|
||||
0x38,0xEE,0x52,0xAD,0x7C,0xFF,0x01,0xD7,
|
||||
0x00,0x38,0x10,0x6E,0x2C,0x77,0x22,0xDD,
|
||||
0x7E,0xFF,0x12,0xC9,0x18,0xE7,0x00,0x7E,
|
||||
0x00,0x38,0x10,0x6C,0x3C,0xC6,0x60,0xBF,
|
||||
0x0E,0xFF,0x78,0xF3,0x00,0xDE,0x00,0x70,
|
||||
0x00,0x00,0x30,0x4C,0x70,0x9E,0x06,0xFB,
|
||||
0x7C,0xF3,0x0E,0x5F,0x00,0x7B,0x00,0x1E,
|
||||
0x00,0x7E,0x18,0xE7,0x36,0xED,0x02,0xFD,
|
||||
0x7E,0xFF,0x08,0x53,0x10,0x6E,0x00,0x38
|
||||
};
|
||||
|
||||
/* End of SPRITES.C */
|
||||
|
||||
BIN
res/sprites.gbr
BIN
res/sprites.gbr
Binary file not shown.
@@ -10,7 +10,7 @@
|
||||
Compression : None.
|
||||
Counter : None.
|
||||
Tile size : 8 x 8
|
||||
Tiles : 0 to 10
|
||||
Tiles : 0 to 25
|
||||
|
||||
Palette colors : None.
|
||||
SGB Palette : None.
|
||||
|
||||
@@ -25,8 +25,8 @@
|
||||
/* Start of tile array. */
|
||||
unsigned char tiles[] =
|
||||
{
|
||||
0x10,0x00,0x00,0x00,0x08,0x00,0x10,0x00,
|
||||
0x30,0x00,0x20,0x00,0x60,0x00,0x50,0x20,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
||||
0xFF,0xFF,0xFF,0xFF,0x00,0xFF,0x00,0xFF,
|
||||
0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,
|
||||
0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,
|
||||
|
||||
BIN
res/tiles.gbr
BIN
res/tiles.gbr
Binary file not shown.
@@ -24,6 +24,15 @@
|
||||
#define SC_IBL 0b0010
|
||||
#define SC_IBR 0b0001
|
||||
|
||||
#define SI_UP 0
|
||||
#define SI_DOWN 1
|
||||
#define SI_LEFT 2
|
||||
#define SI_RIGHT 3
|
||||
#define SI_UP_RIGHT 4
|
||||
#define SI_DOWN_RIGHT 5
|
||||
#define SI_UP_LEFT 6
|
||||
#define SI_DOWN_LEFT 7
|
||||
|
||||
/* Sprite Collision point diagram:
|
||||
* x TL LT x
|
||||
* ------------
|
||||
|
||||
43
src/main.c
43
src/main.c
@@ -1,22 +1,25 @@
|
||||
#include <gb/gb.h>
|
||||
#include <gb/drawing.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include "../res/tiles.h"
|
||||
#include "../res/map.h"
|
||||
#include"../res/sprites.h"
|
||||
#include"../res/sprite_metadata.h"
|
||||
#include "./flags.h"
|
||||
#include "./constants.h"
|
||||
#include "./sprite.h"
|
||||
#include "./vec.h"
|
||||
|
||||
#define NO_SCREEN_SPRITES 3
|
||||
|
||||
void init_gfx()
|
||||
{
|
||||
// Load Background tiles and then map
|
||||
set_bkg_data(0, 23, tiles);
|
||||
set_bkg_tiles(0, 0, map.width, map.height, map.data);
|
||||
|
||||
set_sprite_data(0, 11, sprites);
|
||||
set_sprite_tile(0, 2);
|
||||
set_sprite_prop(0, 0);
|
||||
set_sprite_data(0, 26, sprites);
|
||||
|
||||
// Turn the background map on to make it visible
|
||||
SHOW_BKG;
|
||||
@@ -25,25 +28,33 @@ void init_gfx()
|
||||
|
||||
void main(void)
|
||||
{
|
||||
unsigned int fc = 0;
|
||||
struct Sprites sprite;
|
||||
|
||||
init_gfx();
|
||||
|
||||
sprite.pos.x = 72;
|
||||
sprite.pos.y = 36;
|
||||
sprite.vel.x = 0;
|
||||
sprite.vel.y = 0;
|
||||
sprite.acc.x = 0;
|
||||
sprite.acc.y = 0;
|
||||
move_sprite(0, sprite.pos.x, sprite.pos.y);
|
||||
unsigned int i, jp, fc = 0;
|
||||
struct Sprites screen_sprites[NO_SCREEN_SPRITES];
|
||||
|
||||
|
||||
memcpy(&(screen_sprites[0]), &(sprites_info[2]), sizeof(Sprite));
|
||||
memcpy(&(screen_sprites[1]), &(sprites_info[1]), sizeof(Sprite));
|
||||
memcpy(&(screen_sprites[2]), &(sprites_info[0]), sizeof(Sprite));
|
||||
screen_sprites[0].has_joypad = 1;
|
||||
|
||||
for (i = 0; i < NO_SCREEN_SPRITES; i++) {
|
||||
screen_sprites[i].bitmap_index_prev = -1;
|
||||
screen_sprites[i].gb_sprite_index = i;
|
||||
screen_sprites[i].pos.x = 72+(8*i);
|
||||
screen_sprites[i].pos.y = 36+(8*i);
|
||||
sprite_draw_to_screen(&(screen_sprites[i]));
|
||||
}
|
||||
|
||||
|
||||
// Loop forever
|
||||
while(1) {
|
||||
fc++;
|
||||
sprite_iter_frame(&sprite, &map, joypad(), &fc);
|
||||
move_sprite(0, sprite.pos.x, sprite.pos.y);
|
||||
jp = joypad();
|
||||
for (i = 0; i < NO_SCREEN_SPRITES; i++) {
|
||||
sprite_iter_frame(&(screen_sprites[i]), &map, screen_sprites[i].has_joypad ? jp : 0, &fc);
|
||||
}
|
||||
|
||||
// Done processing, yield CPU and wait for start of next frame
|
||||
wait_vbl_done();
|
||||
|
||||
215
src/sprite.c
215
src/sprite.c
@@ -5,15 +5,17 @@
|
||||
#include "./flags.h"
|
||||
#include "./map.h"
|
||||
|
||||
#define GET_TILE_INDEX_BY_COORD(x, y) ((((y) / PIXELS_PER_TILE) * 20) + ((x) / PIXELS_PER_TILE))
|
||||
|
||||
typedef struct Sprites {
|
||||
int frames_since_last_dash;
|
||||
int frames_since_last_jump;
|
||||
int size;
|
||||
UVec pos;
|
||||
Vec vel;
|
||||
Vec acc;
|
||||
} Sprite;
|
||||
#define GET_SPRITE_CORNERS(sprite, sc) \
|
||||
sc.itl.x = sprite->pos.x - sprite->collision_offset[sprite->bitmap_index].itl.x; \
|
||||
sc.itl.y = sprite->pos.y - sprite->collision_offset[sprite->bitmap_index].itl.y - 8; \
|
||||
sc.itr.x = sprite->pos.x - sprite->collision_offset[sprite->bitmap_index].itr.x; \
|
||||
sc.itr.y = sprite->pos.y - sprite->collision_offset[sprite->bitmap_index].itr.y - 8; \
|
||||
sc.ibl.x = sprite->pos.x - sprite->collision_offset[sprite->bitmap_index].ibl.x; \
|
||||
sc.ibl.y = sprite->pos.y - sprite->collision_offset[sprite->bitmap_index].ibl.y - 8; \
|
||||
sc.ibr.x = sprite->pos.x - sprite->collision_offset[sprite->bitmap_index].ibr.x; \
|
||||
sc.ibr.y = sprite->pos.y - sprite->collision_offset[sprite->bitmap_index].ibr.y - 8;
|
||||
|
||||
|
||||
typedef struct SpriteCorners {
|
||||
@@ -24,36 +26,39 @@ typedef struct SpriteCorners {
|
||||
} SpriteCorners;
|
||||
|
||||
|
||||
typedef struct Sprites {
|
||||
int gb_sprite_index;
|
||||
int frames_since_last_dash;
|
||||
int frames_since_last_jump;
|
||||
int bitmap_index_prev;
|
||||
int bitmap_index;
|
||||
int bitmap_indexes[8];
|
||||
int bitmap_prop[8];
|
||||
int has_diag_sprites;
|
||||
int has_joypad;
|
||||
char name[20];
|
||||
SpriteCorners collision_offset[8];
|
||||
UVec pos;
|
||||
Vec vel;
|
||||
Vec acc;
|
||||
} Sprite;
|
||||
|
||||
|
||||
int get_tile_index_by_coord(unsigned int x, unsigned int y);
|
||||
void getSpriteCorners(Sprite *sprite, SpriteCorners *r);
|
||||
void sprite_iter_frame(Sprite *sprite, Map *map, int joypad, unsigned int *fc);
|
||||
unsigned int sprite_internal_collision(Map *map, Sprite *sprite);
|
||||
unsigned int sprite_collision(Map *map, Sprite *sprite);
|
||||
|
||||
|
||||
int get_tile_index_by_coord(unsigned int x, unsigned int y)
|
||||
{
|
||||
return ((y / PIXELS_PER_TILE) * 20) + (x / PIXELS_PER_TILE);
|
||||
}
|
||||
|
||||
|
||||
void getSpriteCorners(Sprite *sprite, SpriteCorners *sc)
|
||||
{
|
||||
sc->itl.x = sprite->pos.x-8;
|
||||
sc->itl.y = sprite->pos.y-16;
|
||||
sc->itr.x = sprite->pos.x-1;
|
||||
sc->itr.y = sprite->pos.y-16;
|
||||
sc->ibl.x = sprite->pos.x-8;
|
||||
sc->ibl.y = sprite->pos.y-9 ;
|
||||
sc->ibr.x = sprite->pos.x-1;
|
||||
sc->ibr.y = sprite->pos.y-9;
|
||||
}
|
||||
void sprite_draw_to_screen(Sprite *sprite);
|
||||
void sprite_update_bitmap(Sprite *sprite);
|
||||
|
||||
|
||||
// update a sprite for stuff that changes every frame
|
||||
void sprite_iter_frame(Sprite *sprite, Map *map, int joypad, unsigned int *fc)
|
||||
{
|
||||
int c, collision_check_steps;
|
||||
SpriteCorners sc;
|
||||
int c, collision_check_steps, sprite_internal_collision,
|
||||
absvelx = abs(sprite->vel.x), absvely = abs(sprite->vel.y);
|
||||
int b_right = joypad & J_RIGHT, b_left = joypad & J_LEFT, b_up = joypad & J_UP,
|
||||
b_down = joypad & J_DOWN, b_a = joypad & J_A, b_b = joypad & J_B;
|
||||
int tl, tr, bl, br, lt, lb, rt, rb;
|
||||
|
||||
// target displacement is sprite->vel but may collide, giving actual displacment
|
||||
Vec displacement = {.x = 0, .y = 0};
|
||||
@@ -68,68 +73,92 @@ void sprite_iter_frame(Sprite *sprite, Map *map, int joypad, unsigned int *fc)
|
||||
}
|
||||
|
||||
// player move left/right
|
||||
if ((joypad & J_RIGHT) && (sprite->vel.x < TERM_VELX)) sprite->acc.x = 1;
|
||||
else if ((joypad & J_LEFT) && (sprite->vel.x > -TERM_VELX)) sprite->acc.x = -1;
|
||||
else sprite->acc.x = -sprite->vel.x/abs(sprite->vel.x);
|
||||
if ((joypad & b_right) && (sprite->vel.x < TERM_VELX)) sprite->acc.x = 1;
|
||||
else if ((joypad & b_left) && (sprite->vel.x > -TERM_VELX)) sprite->acc.x = -1;
|
||||
else sprite->acc.x = -sprite->vel.x/absvelx;
|
||||
sprite->vel.x += sprite->acc.x;
|
||||
|
||||
// player dash
|
||||
if ((joypad & J_B) && (sprite->frames_since_last_dash > DASH_TIMEOUT_FRAMES)) {
|
||||
if (b_b && (sprite->frames_since_last_dash > DASH_TIMEOUT_FRAMES)) {
|
||||
int frames_since_last_dash_copy = sprite->frames_since_last_dash;
|
||||
sprite->frames_since_last_dash = 0;
|
||||
|
||||
if ((joypad & J_LEFT) && !(joypad & (J_UP | J_RIGHT | J_DOWN))) {
|
||||
sprite->vel.x = -DASH_VELL;
|
||||
} else if ((joypad & J_RIGHT) && !(joypad & (J_UP | J_LEFT | J_DOWN))) {
|
||||
sprite->vel.x = DASH_VELL;
|
||||
} else if ((joypad & J_UP) && !(joypad & (J_RIGHT | J_LEFT | J_DOWN))) {
|
||||
sprite->vel.y = -DASH_VELL;
|
||||
} else if ((joypad & J_DOWN) && !(joypad & (J_UP | J_LEFT | J_RIGHT))) {
|
||||
sprite->vel.y = DASH_VELL;
|
||||
} else if ((joypad & J_RIGHT) && (joypad & J_UP)) {
|
||||
sprite->vel.x = DASH_VELD;
|
||||
sprite->vel.y = -DASH_VELD;
|
||||
} else if ((joypad & J_LEFT) && (joypad & J_UP)) {
|
||||
if (b_left) {
|
||||
if (b_up) {
|
||||
sprite->vel.x = -DASH_VELD;
|
||||
sprite->vel.y = -DASH_VELD;
|
||||
} else if ((joypad & J_LEFT) && (joypad & J_DOWN)) {
|
||||
} else if (b_down) {
|
||||
sprite->vel.x = -DASH_VELD;
|
||||
sprite->vel.y = DASH_VELD;
|
||||
} else if ((joypad & J_RIGHT) && (joypad & J_DOWN)) {
|
||||
} else {
|
||||
sprite->vel.x = -DASH_VELL;
|
||||
}
|
||||
} else if (b_right) {
|
||||
if (b_up) {
|
||||
sprite->vel.x = DASH_VELD;
|
||||
sprite->vel.y = -DASH_VELD;
|
||||
} else if (b_down) {
|
||||
sprite->vel.x = DASH_VELD;
|
||||
sprite->vel.y = DASH_VELD;
|
||||
} else {
|
||||
sprite->vel.x = DASH_VELL;
|
||||
}
|
||||
}
|
||||
else if (b_up) sprite->vel.y = -DASH_VELL;
|
||||
else if (b_down) sprite->vel.y = DASH_VELL;
|
||||
// if player doesn't hold the right buttons to dash, don't dash and set the
|
||||
// frames_since_last_dash counter back to what it was before
|
||||
sprite->frames_since_last_dash = frames_since_last_dash_copy;
|
||||
}
|
||||
else sprite->frames_since_last_dash = frames_since_last_dash_copy;
|
||||
}
|
||||
|
||||
// slow down sprite in kind of realistic way
|
||||
// (in real life i think it's drag is proportional to sprite->vel square but not
|
||||
// sure if that is worth the compute yet cause everythign else is shit)
|
||||
if (sprite->vel.y > TERM_VELY) sprite->vel.y -= (abs(sprite->vel.y)-TERM_VELY)/TERM_VELY_DIVISOR;
|
||||
if (sprite->vel.y < -TERM_VELY) sprite->vel.y += (abs(sprite->vel.y)-TERM_VELY)/TERM_VELY_DIVISOR;
|
||||
if (sprite->vel.x > TERM_VELX) sprite->vel.x -= (abs(sprite->vel.x)-TERM_VELX)/TERM_VELX_DIVISOR;
|
||||
if (sprite->vel.x < -TERM_VELX) sprite->vel.x += (abs(sprite->vel.x)-TERM_VELX)/TERM_VELX_DIVISOR;
|
||||
if (sprite->vel.y > TERM_VELY) sprite->vel.y -= (absvely-TERM_VELY)/TERM_VELY_DIVISOR;
|
||||
if (sprite->vel.y < -TERM_VELY) sprite->vel.y += (absvely-TERM_VELY)/TERM_VELY_DIVISOR;
|
||||
if (sprite->vel.x > TERM_VELX) sprite->vel.x -= (absvelx-TERM_VELX)/TERM_VELX_DIVISOR;
|
||||
if (sprite->vel.x < -TERM_VELX) sprite->vel.x += (absvelx-TERM_VELX)/TERM_VELX_DIVISOR;
|
||||
|
||||
c = sprite_collision(map, sprite);
|
||||
absvelx = abs(sprite->vel.x);
|
||||
absvely = abs(sprite->vel.y);
|
||||
|
||||
// if sprite not moving, no more logic needs to be done --- right?
|
||||
if ((absvelx == 0) && (absvely == 0)) return;
|
||||
|
||||
GET_SPRITE_CORNERS(sprite, sc);
|
||||
|
||||
// don't let player move in a direction which they are already touching something
|
||||
if (((c & SC_TL) | (c & SC_TR)) && (sprite->vel.y < 0)) { sprite->vel.y = 0; }
|
||||
if (((c & SC_BL) | (c & SC_BR)) && (sprite->vel.y > 0)) {
|
||||
if (sprite->vel.y > 0) {
|
||||
br = map->data[GET_TILE_INDEX_BY_COORD(sc.ibl.x, sc.ibl.y+1)];
|
||||
bl = map->data[GET_TILE_INDEX_BY_COORD(sc.ibr.x, sc.ibr.y+1)];
|
||||
|
||||
if (bl | br) {
|
||||
sprite->vel.y = 0;
|
||||
// player jump
|
||||
if ((joypad & J_A) && (sprite->frames_since_last_jump > JUMP_TIMEOUT_FRAMES)) {
|
||||
if (b_a && (sprite->frames_since_last_jump > JUMP_TIMEOUT_FRAMES)) {
|
||||
sprite->vel.y = -JUMP_VEL;
|
||||
sprite->frames_since_last_jump = 0;
|
||||
}
|
||||
else sprite->vel.y = 0;
|
||||
}
|
||||
if (((c & SC_RT) | (c & SC_RB)) && (sprite->vel.x > 0)) { sprite->vel.x = 0; }
|
||||
if (((c & SC_LT) | (c & SC_LB)) && (sprite->vel.x < 0)) { sprite->vel.x = 0; }
|
||||
} else if (sprite->vel.y < 0) {
|
||||
tl = map->data[GET_TILE_INDEX_BY_COORD(sc.itl.x, sc.itl.y-1)];
|
||||
tr = map->data[GET_TILE_INDEX_BY_COORD(sc.itr.x, sc.itr.y-1)];
|
||||
if (tl | tr) sprite->vel.y = 0;
|
||||
}
|
||||
|
||||
if (sprite->vel.x > 0) {
|
||||
rt = map->data[GET_TILE_INDEX_BY_COORD(sc.itr.x+1, sc.itr.y)];
|
||||
rb = map->data[GET_TILE_INDEX_BY_COORD(sc.ibr.x+1, sc.ibr.y)];
|
||||
if (rt | rb) sprite->vel.x = 0;
|
||||
} else if (sprite->vel.x < 0) {
|
||||
lt = map->data[GET_TILE_INDEX_BY_COORD(sc.itl.x-1, sc.itl.y)];
|
||||
lb = map->data[GET_TILE_INDEX_BY_COORD(sc.ibl.x-1, sc.ibl.y)];
|
||||
if (lt | lb) sprite->vel.x = 0;
|
||||
}
|
||||
|
||||
absvelx = abs(sprite->vel.x);
|
||||
absvely = abs(sprite->vel.y);
|
||||
|
||||
int absvelx = abs(sprite->vel.x);
|
||||
int absvely = abs(sprite->vel.y);
|
||||
collision_check_steps = (absvelx > absvely) ? absvelx : absvely;
|
||||
|
||||
original_position.x = sprite->pos.x;
|
||||
@@ -139,43 +168,41 @@ void sprite_iter_frame(Sprite *sprite, Map *map, int joypad, unsigned int *fc)
|
||||
sprite->pos.x = original_position.x + ((step * sprite->vel.x)/collision_check_steps);
|
||||
sprite->pos.y = original_position.y + ((step * sprite->vel.y)/collision_check_steps);
|
||||
|
||||
if (!sprite_internal_collision(map, sprite)) break;
|
||||
sprite_internal_collision = 0;
|
||||
if (map->data[GET_TILE_INDEX_BY_COORD(sc.itl.x, sc.itl.y)]) sprite_internal_collision++;
|
||||
if (map->data[GET_TILE_INDEX_BY_COORD(sc.itr.x, sc.itr.y)]) sprite_internal_collision++;
|
||||
if (map->data[GET_TILE_INDEX_BY_COORD(sc.ibl.x, sc.ibl.y)]) sprite_internal_collision++;
|
||||
if (map->data[GET_TILE_INDEX_BY_COORD(sc.ibr.x, sc.ibr.y)]) sprite_internal_collision++;
|
||||
if (sprite_internal_collision == 0) break;
|
||||
}
|
||||
|
||||
sprite_draw_to_screen(sprite);
|
||||
move_sprite(sprite->gb_sprite_index, sprite->pos.x, sprite->pos.y);
|
||||
}
|
||||
|
||||
|
||||
// calculate internal collisions
|
||||
unsigned int sprite_internal_collision(Map *map, Sprite *sprite)
|
||||
// set new sprite bitmap
|
||||
void sprite_update_bitmap(Sprite *sprite)
|
||||
{
|
||||
unsigned int rv = 0;
|
||||
SpriteCorners sc;
|
||||
getSpriteCorners(sprite, &sc);
|
||||
sprite->bitmap_index_prev = sprite->bitmap_index;
|
||||
if ((sprite->vel.y > 0) && (sprite->vel.x > 0)) sprite->bitmap_index = SI_DOWN_RIGHT;
|
||||
else if ((sprite->vel.y < 0) && (sprite->vel.x > 0)) sprite->bitmap_index = SI_UP_RIGHT;
|
||||
else if ((sprite->vel.y > 0) && (sprite->vel.x < 0)) sprite->bitmap_index = SI_DOWN_LEFT;
|
||||
else if ((sprite->vel.y < 0) && (sprite->vel.x < 0)) sprite->bitmap_index = SI_UP_LEFT;
|
||||
|
||||
if (map->data[get_tile_index_by_coord(sc.itl.x, sc.itl.y)]) rv = rv | SC_ITL;
|
||||
if (map->data[get_tile_index_by_coord(sc.itr.x, sc.itr.y)]) rv = rv | SC_ITR;
|
||||
if (map->data[get_tile_index_by_coord(sc.ibl.x, sc.ibl.y)]) rv = rv | SC_IBL;
|
||||
if (map->data[get_tile_index_by_coord(sc.ibr.x, sc.ibr.y)]) rv = rv | SC_IBR;
|
||||
|
||||
return rv;
|
||||
else if ( sprite->vel.y < 0) sprite->bitmap_index = SI_UP;
|
||||
else if ( sprite->vel.y > 0) sprite->bitmap_index = SI_DOWN;
|
||||
else if ( sprite->vel.x > 0) sprite->bitmap_index = SI_RIGHT;
|
||||
else if ( sprite->vel.x < 0) sprite->bitmap_index = SI_LEFT;
|
||||
}
|
||||
|
||||
|
||||
// check for external collisions (if rectangle is at least touchign something)
|
||||
unsigned int sprite_collision(Map *map, Sprite *sprite)
|
||||
void sprite_draw_to_screen(Sprite *sprite)
|
||||
{
|
||||
unsigned int rv = 0;
|
||||
SpriteCorners sc;
|
||||
getSpriteCorners(sprite, &sc);
|
||||
|
||||
// check if corners are in a non 0 tile
|
||||
if (map->data[get_tile_index_by_coord(sc.itl.x, sc.itl.y-1)]) rv = rv | SC_TL;
|
||||
if (map->data[get_tile_index_by_coord(sc.itr.x, sc.itr.y-1)]) rv = rv | SC_TR;
|
||||
if (map->data[get_tile_index_by_coord(sc.ibl.x, sc.ibl.y+1)]) rv = rv | SC_BL;
|
||||
if (map->data[get_tile_index_by_coord(sc.ibr.x, sc.ibr.y+1)]) rv = rv | SC_BR;
|
||||
if (map->data[get_tile_index_by_coord(sc.itl.x-1, sc.itl.y )]) rv = rv | SC_LT;
|
||||
if (map->data[get_tile_index_by_coord(sc.ibl.x-1, sc.ibl.y )]) rv = rv | SC_LB;
|
||||
if (map->data[get_tile_index_by_coord(sc.itr.x+1, sc.itr.y )]) rv = rv | SC_RT;
|
||||
if (map->data[get_tile_index_by_coord(sc.ibr.x+1, sc.ibr.y )]) rv = rv | SC_RB;
|
||||
|
||||
return rv;
|
||||
// only set sprite if sprite to be used has changed
|
||||
sprite_update_bitmap(sprite);
|
||||
if (sprite->bitmap_index_prev != sprite->bitmap_index) {
|
||||
set_sprite_tile(sprite->gb_sprite_index, sprite->bitmap_indexes[sprite->bitmap_index]);
|
||||
set_sprite_prop(sprite->gb_sprite_index, sprite->bitmap_prop[sprite->bitmap_index]);
|
||||
}
|
||||
move_sprite(sprite->gb_sprite_index, sprite->pos.x, sprite->pos.y);
|
||||
}
|
||||
|
||||
18
src/sprite.h
18
src/sprite.h
@@ -4,10 +4,25 @@
|
||||
#include "./vec.h"
|
||||
#include "./map.h"
|
||||
|
||||
typedef struct SpriteCorners {
|
||||
UVec itl;
|
||||
UVec itr;
|
||||
UVec ibl;
|
||||
UVec ibr;
|
||||
} SpriteCorners;
|
||||
|
||||
typedef struct Sprites {
|
||||
int gb_sprite_index;
|
||||
int frames_since_last_dash;
|
||||
int frames_since_last_jump;
|
||||
int size;
|
||||
int bitmap_index_prev;
|
||||
int bitmap_index;
|
||||
int bitmap_indexes[8];
|
||||
int bitmap_prop[8];
|
||||
int has_diag_sprites;
|
||||
int has_joypad;
|
||||
char name[20];
|
||||
SpriteCorners collision_offset[8];
|
||||
UVec pos;
|
||||
Vec vel;
|
||||
Vec acc;
|
||||
@@ -16,5 +31,6 @@ typedef struct Sprites {
|
||||
void sprite_iter_frame(Sprite *sprite, Map *map, int joypad, unsigned int *fc);
|
||||
unsigned int sprite_internal_collision(Map *map, Sprite *sprite);
|
||||
unsigned int sprite_collision(Map *map, Sprite *sprite);
|
||||
void sprite_draw_to_screen(Sprite *sprite);
|
||||
|
||||
#endif
|
||||
|
||||
Reference in New Issue
Block a user