Fierelier/me.fier.engine
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Make engine_texture_color_get output into pointer

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This commit is contained in:
Fierelier 2023-08-19 18:53:43 +02:00
parent d24bd5c9f6
commit aeeafde2b1
4 changed files with 12 additions and 13 deletions
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12
src/frontend/sdl/main.c
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@ -57,15 +57,13 @@ void engine_texture_destroy(struct ENGINE_TEXTURE * engine_texture) {
engine_memory_free(engine_texture); engine_memory_free(engine_texture);
} }
struct ENGINE_COLOR engine_texture_color_get(struct ENGINE_TEXTURE * engine_texture,int x,int y) { void engine_texture_color_get(struct ENGINE_COLOR * color,struct ENGINE_TEXTURE * engine_texture,int x,int y) {
struct ENGINE_COLOR color;
Uint32 pixelIndex = (x + (y * engine_texture -> width)) * 4; Uint32 pixelIndex = (x + (y * engine_texture -> width)) * 4;
unsigned char * pixels = engine_texture -> fe_texture -> pixels; unsigned char * pixels = engine_texture -> fe_texture -> pixels;
color.r = pixels[pixelIndex]; color -> r = pixels[pixelIndex];
color.g = pixels[pixelIndex + 1]; color -> g = pixels[pixelIndex + 1];
color.b = pixels[pixelIndex + 2]; color -> b = pixels[pixelIndex + 2];
color.a = pixels[pixelIndex + 3]; color -> a = pixels[pixelIndex + 3];
return color;
} }
struct ENGINE_TEXTURE * engine_rendertarget; struct ENGINE_TEXTURE * engine_rendertarget;

2
src/helpers.c
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@ -44,7 +44,7 @@ void engine_rendertarget_draw_texture(struct ENGINE_TEXTURE * texture,int x,int
int tx = sx; int tx = sx;
while (sy < ey) { while (sy < ey) {
while (tx < ex) { while (tx < ex) {
color = engine_texture_color_get(texture,tx,sy); engine_texture_color_get(&color,texture,tx,sy);
engine_color_set(color.r,color.g,color.b,color.a); engine_color_set(color.r,color.g,color.b,color.a);
engine_rendertarget_draw_point(x + tx,y + sy); engine_rendertarget_draw_point(x + tx,y + sy);
++tx; ++tx;

3
src/lua_manual.c
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@ -22,7 +22,8 @@ int engine_luaf_texture_color_get(lua_State *L) {
struct ENGINE_TEXTURE * texture = lua_touserdata(L,1); struct ENGINE_TEXTURE * texture = lua_touserdata(L,1);
int x = luaL_checkinteger(L,2); int x = luaL_checkinteger(L,2);
int y = luaL_checkinteger(L,3); int y = luaL_checkinteger(L,3);
struct ENGINE_COLOR color = engine_texture_color_get(texture,x,y); struct ENGINE_COLOR color;
engine_texture_color_get(&color,texture,x,y);
lua_pushinteger(L,color.r); lua_pushinteger(L,color.r);
lua_pushinteger(L,color.g); lua_pushinteger(L,color.g);
lua_pushinteger(L,color.b); lua_pushinteger(L,color.b);

8
src/values/functions.toml
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@ -33,10 +33,10 @@ argNames = ["width","height"]
description = "Create a texture." description = "Create a texture."
[engine_texture_color_get] [engine_texture_color_get]
type = "struct ENGINE_COLOR" type = "void"
arguments = ["struct ENGINE_TEXTURE *","int","int"] arguments = ["struct ENGINE_COLOR *","struct ENGINE_TEXTURE *","int","int"]
argNames = ["texture", "x", "y"] argNames = ["color", "texture", "x", "y"]
description = "Get color out of a texture." description = "Get color out of a texture. ENGINE_COLOR pointer not required in lua."
lua = "manual" lua = "manual"
[engine_texture_destroy] [engine_texture_destroy]